70163243 has 4 divisors (see below), whose sum is σ = 70198920. Its totient is φ = 70127568.

The previous prime is 70163231. The next prime is 70163251. The reversal of 70163243 is 34236107.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70163243 - 2²⁰ = 69114667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70163263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14705 + ... + 18882.

It is an arithmetic number, because the mean of its divisors is an integer number (17549730).

Almost surely, 2^70163243 is an apocalyptic number.

70163243 is a deficient number, since it is larger than the sum of its proper divisors (35677).

70163243 is a wasteful number, since it uses less digits than its factorization.

70163243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35676.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 70163243 is about 8376.3502195169. The cubic root of 70163243 is about 412.4486483979.

The spelling of 70163243 in words is "seventy million, one hundred sixty-three thousand, two hundred forty-three".